Windmill



2 sheets-smet 1.

(No Model.)

T. H. 8v O. A. BREWER.

WINDMILL.

No. 380,547. Patented Apr. 3, 1888.

WITNESSES.

(No Model.) 2 Sheets-Sheet 2.

T. H. 8u' 0. A. BREWER.

WINDMILL.

Patented Apr. 3, 1888.

WITJVEISISES. I i (j d U y UNTTED STATES PATENT @ricca THOMAS H. BREVER AND ORA A. BREWER, OF PAVNEE ROCK, KANSAS.

WlNDNllLL.

SPECIFICATION forming part of Letters Patent No. 380,547, dated April 3, 1888.

Application filed June 16, lS'c. Serial No. Q-liil. (No model.)

To @ZZ whom it may concern.-

Beit known that we, THOMAS H. BREWER and ORA A. BREWER, citizens of the United States of America, residing at Pawnee Rock, in the county of Barton and State of Kansas, have invented certain new and useful Improvements in XVindmills; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Our invention relates to certain new and useful improvements in windmills, the object of our invention being to provide an improved construction, whereby the parts are rendered much more rigid and simple than has heretofore been accomplished; also, to provide a cheap and effective means for throwing a windmill in and out of the wind.

lVit-h the above leading objects in view our invention consists in the construction and combination of the parts, as will be hereinafter fully set forth, and specifically pointed out in the claim.

In the accompanying drawings, which illustrate our invention, Figure l is a side view of a windmill constructed in accordance with our improvement. Fig. 2 is a detail front view. Fig. 3 is a detail perspective view, and Fig. L is a detail plan view.

In the accompanying drawings, A refers to the tower or windmill support, which is of ordinary construction, the same being provided near its top with a cross-beam, @which :forms a support or bearing for a stationary shaft, B, which extends upwardly therefrom and passes through a socket, B, which is attached to the upper end of the frame or support A by a flange, b, which is formed thereon, said ange forming the under bearing for the yoke. This stationary shaft B is tubular, and its upper end enters a socket in the upper transverse portion of the yoke, thereby forming asupport or bearing upon which the yoke can turn.

The yoke C is preferably made of a single casting of the shape shown, and it is provided l m m, which are perforated at their outer ends ict through its horizontal lower portion, C', with a perforation,through which the stationary shaft B, which is tubular, passes, and on a line with the opening the upper horizontal portion, c,

has a shoulder, upon which shoulder the upshaft passes the lower portion of the journalbox d is formed integral with the yoke, while the upper portion, cl, which is provided with an oil-cup, is bolted thereto in the usual manner.

The shaft D has rigidly attached thereto a wind-wheel, E, which consists of a series of radiating arms, e, which are attached by suitable bolts to a casting. F, which is rigidly attached to the shaft D, hereinbefore referred to. To the radiating arms e are secured circles f, to which the stationary blades F are attached. The radiating arms e e are provided with bentbars g, as shown in Figs. l and 2, which bars are connected by short eyebolts g' and a disk, h, attached to the end of the shaft D, whereby the radiating arms are braced. The aforesaid braces may be tightened by simply turning the nuts attached to the eyebolts which pass through the disks, or by moving the disk having the radiating arms rearwardly upon the shaft D.

The end ofthe shaft D which projects through the yoke C is provided with a crank-wheel, l, to which the bent pitman J is pivotally attached, the upper end of said pitman being bifurcated and pivotally attached to the pumprod K. The pump-rod K passes through the upper transverse portion of the bracket L, which is rigidly attached to the upper portion of the yoke.

The yoke C is provided at one side of its front vertical portion with a vane-head, M, which consists of lateral projecting portions for the reception of a pivot-pin which passes through straps a and n', attached to the center bar, N, of the vane. The upper bar, n, at a suitable point is bent so as to provide a recessed portion 'and bearings for a pulley, o, which travels upon a guide, O. This guide preferably consists of a bar of metal, which is attached tothe front portion of the yoke above the bearing of the shaft D, from which it extends downwardly parallel with the wheel and is bent upon a segment of a circle to the opposite side or rear portion of theyoke C, to which it is rigidly secured. Thisguidebar O is provided with rubber stops p and p', against which the center bar, N, of the vane will abut when it reaches the limit of its movement in either direction.

Q refers to a bent lever which is pivotally attached to the rear side of the yoke, the upper portion of this lever being connected by a rod, R, tothe center rod, N, of the vane. The lower end of the lever Q is provided with a suitable weight, which is adjustable thereon, and adjacent to the normal position of said weight an eye is formed, within which eye can be attached a cord, S, which extends from said eye to the upper portion of the yoke, Where Ait passes over a pulley, s, which is pivotally mounted upon the upper portion of the yoke. The cord is then let down through the stationary shaft B to a point near the lower portion of the frame. VVhen'said cord is slack,

the weightwill hold the vane iu a position substantially at right angles with the wheel, so as to hold the same in an operative position, and when it is desired to throw the wheel out of an operative position, by simply drawing upon the cord the weighted end ofthe leupon its pivot,

ver will be elevated and the vane will be swung so as to be parallel with the wheel. Y

We are aware that prior to our invention it has been proposed to operate the vane of a windmill by a cord or other suitable flexible connection, which is attached to a weighted lever, so as to swing said vane upon the yoke, and we do not claim suchconstruction, broadly; but

lVhat we claim as new, and desire to secure by Letters Patent, is-

The combination, substantially as before set forth, of the vertical tubular shaft B, a rectangular frame or yoke having upper and lower members provided centrally with bearings to receive said shaft, a front vertical member provided at one side with a vane-head and centrally with a bearing for the Wheel-shaft, and a rear vertical member carrying a pivotstud, the vane pivoted to the vane-head, a guide-rod secured to the front and rear vertical members of the yoke, aguide-roll journaled on the vane and adapted to travel on the guiderod, a weighted lever mounted on the pivotstud of the rear vertical member, a rod connecting the upper end of said lever with the vane, the wind-wheel jourualed in its bearing, and a rope or cord connected to the lever to elevate the weighted end thereof.

In testimony whereof we affix our signatures in presence of two witnesses.

THOMAS H. BREVER. ORA A. BREWER.

W`itnesses:

GEORGE HOLLAND, W. R. BUNTING. 

